July 21 (Reuters) - U.S. stocks fell on Tuesday in the wake
of results from IBM and United Technologies that dampened early
optimism over earnings season ahead of quarterly profits from
tech giants including Apple and Microsoft.

The Dow fell 1 percent, with IBM and United Tech
contributing around 118 points to the 181-point drop.
The decline marked the biggest percentage decline in about two
weeks for the blue-chip index.

IBM's shares were down 5.9 percent to $163.07, a day after
the company's revenue dropped for the 13th consecutive quarter
and fell short of analyst expectations.

Fellow Dow component United Technologies tumbled 7 percent
to $102.71 and was the worst performer on the Dow after cutting
its full-year profit outlook for the third time this year.
Continuación...